8=6+31t-16t^2

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Solution for 8=6+31t-16t^2 equation:


Simplifying
8 = 6 + 31t + -16t2

Solving
8 = 6 + 31t + -16t2

Solving for variable 't'.

Combine like terms: 8 + -6 = 2
2 + -31t + 16t2 = 6 + 31t + -16t2 + -6 + -31t + 16t2

Reorder the terms:
2 + -31t + 16t2 = 6 + -6 + 31t + -31t + -16t2 + 16t2

Combine like terms: 6 + -6 = 0
2 + -31t + 16t2 = 0 + 31t + -31t + -16t2 + 16t2
2 + -31t + 16t2 = 31t + -31t + -16t2 + 16t2

Combine like terms: 31t + -31t = 0
2 + -31t + 16t2 = 0 + -16t2 + 16t2
2 + -31t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
2 + -31t + 16t2 = 0

Begin completing the square.  Divide all terms by
16 the coefficient of the squared term: 

Divide each side by '16'.
0.125 + -1.9375t + t2 = 0

Move the constant term to the right:

Add '-0.125' to each side of the equation.
0.125 + -1.9375t + -0.125 + t2 = 0 + -0.125

Reorder the terms:
0.125 + -0.125 + -1.9375t + t2 = 0 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + -1.9375t + t2 = 0 + -0.125
-1.9375t + t2 = 0 + -0.125

Combine like terms: 0 + -0.125 = -0.125
-1.9375t + t2 = -0.125

The t term is -1.9375t.  Take half its coefficient (-0.96875).
Square it (0.9384765625) and add it to both sides.

Add '0.9384765625' to each side of the equation.
-1.9375t + 0.9384765625 + t2 = -0.125 + 0.9384765625

Reorder the terms:
0.9384765625 + -1.9375t + t2 = -0.125 + 0.9384765625

Combine like terms: -0.125 + 0.9384765625 = 0.8134765625
0.9384765625 + -1.9375t + t2 = 0.8134765625

Factor a perfect square on the left side:
(t + -0.96875)(t + -0.96875) = 0.8134765625

Calculate the square root of the right side: 0.901929356

Break this problem into two subproblems by setting 
(t + -0.96875) equal to 0.901929356 and -0.901929356.

Subproblem 1

t + -0.96875 = 0.901929356 Simplifying t + -0.96875 = 0.901929356 Reorder the terms: -0.96875 + t = 0.901929356 Solving -0.96875 + t = 0.901929356 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.96875' to each side of the equation. -0.96875 + 0.96875 + t = 0.901929356 + 0.96875 Combine like terms: -0.96875 + 0.96875 = 0.00000 0.00000 + t = 0.901929356 + 0.96875 t = 0.901929356 + 0.96875 Combine like terms: 0.901929356 + 0.96875 = 1.870679356 t = 1.870679356 Simplifying t = 1.870679356

Subproblem 2

t + -0.96875 = -0.901929356 Simplifying t + -0.96875 = -0.901929356 Reorder the terms: -0.96875 + t = -0.901929356 Solving -0.96875 + t = -0.901929356 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.96875' to each side of the equation. -0.96875 + 0.96875 + t = -0.901929356 + 0.96875 Combine like terms: -0.96875 + 0.96875 = 0.00000 0.00000 + t = -0.901929356 + 0.96875 t = -0.901929356 + 0.96875 Combine like terms: -0.901929356 + 0.96875 = 0.066820644 t = 0.066820644 Simplifying t = 0.066820644

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.870679356, 0.066820644}

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